links for 2011-05-16

As connection speeds increase and the ubiquity of the Internet pervades, digital content reigns. And in this era, free education has never been so accessible. The Web gives lifelong learners the tools to become autodidacts, eschewing exorbitant tuition and joining the ranks of other self-taught great thinkers in history such as Albert Einstein, Alexander Graham Bell, Paul Allen and Ernest Hemingway.